Anatomical features of the lumbo sacral spine

Lumbo-sacral arthrodesis after laminectomy.

The necessity for arthrodesis of the lumbo-sacral spine after laminectomy has been performed arises mainly in the treatment of spondylolisthesis and some lesions of the intervertebral discs. In most cases of spondylolisthesis the lamina is loose and unattached to its body, so it can play no useful part in the fusion operation. Apart from this, it should in all cases be removed to allow a thorou...

Fracture-dislocation of the lumbo-sacral spine with cauda equina lesion. Report of two cases.

Lumbo-sacral interbody spinal fusion.

During the years from 1948 to 1956 a lumbo-sacral inter-body spinal fusion was done on forty-eight patients through a posterior approach. The operations have been divided chronologically into three groups. Improvements in the surgical technique were added in the two later groups, so that ultimately a new operative procedure was evolved and used in the last group, which gave the highest rate of ...

Lumbo-sacral fusion with spring fixation.

A method of posterior lumbo-sacral fusion is described in which springs are used to fix the grafts and to maintain immobilisation. Fifty patients with lumbar disc degeneration or spondylolisthesis have been reviewed. The results have been assessed clinically by grading the symptoms before and after operation. Stay in hospital has been short and return to work rapid. There has been a high propor...

Load displacement behavior of the human lumbo-sacral joint.

The three-dimensional load displacement behavior of nine fresh adult L5-S1 spine motion segments was studied. Static test forces up to 160 N in anterior, posterior, and lateral shear, test forces up to 320 N in compression, and test moments up to 15.7 Nm in flexion, extension, lateral bending, and torsion were used. The six displacements of the center of the inferior L5 endplate were measured 1...